High aspect ratio silicon wire array photoelectrochemical cells

James R. Maiolo, Brendan M. Kayes, Michael A. Filler, Morgan C. Putnam, Michael D. Kelzenberg, Harry A. Atwater, Nathan S Lewis

Research output: Contribution to journalArticle

202 Citations (Scopus)

Abstract

In an effort to develop low-cost solar energy conversion techniques, high uniformity vertically oriented silicon wire arrays have been fabricated. These arrays, which allow for radial diffusion of minority charge carriers, have been measured in a photoelectrochemical cell. Large photovoltages (∼400 mV) have been measured, and these values are significantly greater than those obtained from the substrate alone. Additionally, the wire array samples displayed much higher current densities than the underlying substrate, demonstrating that significant energy conversion was occurring due to the absorption and charge-carrier transport in the vertically aligned Si wires. This method therefore represents a step toward the use of collection-limited semiconductor materials in a wire array format in macroscopic solar cell devices.

Original languageEnglish
Pages (from-to)12346-12347
Number of pages2
JournalJournal of the American Chemical Society
Volume129
Issue number41
DOIs
Publication statusPublished - Oct 17 2007

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Photoelectrochemical cells
Silicon
Aspect ratio
Wire
Solar Energy
Semiconductors
Charge carriers
Energy conversion
Costs and Cost Analysis
Equipment and Supplies
Carrier transport
Substrates
Solar energy
Solar cells
Current density
Semiconductor materials
Costs

ASJC Scopus subject areas

  • Chemistry(all)

Cite this

Maiolo, J. R., Kayes, B. M., Filler, M. A., Putnam, M. C., Kelzenberg, M. D., Atwater, H. A., & Lewis, N. S. (2007). High aspect ratio silicon wire array photoelectrochemical cells. Journal of the American Chemical Society, 129(41), 12346-12347. https://doi.org/10.1021/ja074897c

High aspect ratio silicon wire array photoelectrochemical cells. / Maiolo, James R.; Kayes, Brendan M.; Filler, Michael A.; Putnam, Morgan C.; Kelzenberg, Michael D.; Atwater, Harry A.; Lewis, Nathan S.

In: Journal of the American Chemical Society, Vol. 129, No. 41, 17.10.2007, p. 12346-12347.

Research output: Contribution to journalArticle

Maiolo, JR, Kayes, BM, Filler, MA, Putnam, MC, Kelzenberg, MD, Atwater, HA & Lewis, NS 2007, 'High aspect ratio silicon wire array photoelectrochemical cells', Journal of the American Chemical Society, vol. 129, no. 41, pp. 12346-12347. https://doi.org/10.1021/ja074897c
Maiolo JR, Kayes BM, Filler MA, Putnam MC, Kelzenberg MD, Atwater HA et al. High aspect ratio silicon wire array photoelectrochemical cells. Journal of the American Chemical Society. 2007 Oct 17;129(41):12346-12347. https://doi.org/10.1021/ja074897c
Maiolo, James R. ; Kayes, Brendan M. ; Filler, Michael A. ; Putnam, Morgan C. ; Kelzenberg, Michael D. ; Atwater, Harry A. ; Lewis, Nathan S. / High aspect ratio silicon wire array photoelectrochemical cells. In: Journal of the American Chemical Society. 2007 ; Vol. 129, No. 41. pp. 12346-12347.
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